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Warnings

3A5919A

3

Warnings

The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclamation 
point symbol alerts you to a general warning and the hazard symbols refer to procedure-specific risks. When these 
symbols appear in the body of this manual or on warning labels, refer back to these Warnings. Product-specific hazard 
symbols and warnings not covered in this section may appear throughout the body of this manual where applicable.

WARNING

DUST AND DEBRIS HAZARD

Grinding concrete and other surfaces with this equipment can create dust that contains hazardous 
substances. Grinding can also create flying debris.
To reduce the risk of serious injury:

Control the dust to meet all applicable workplace regulations.

Wear protective eye wear and a properly fit-tested and government approved respirator suitable for 
the dust conditions.

Use equipment only in a well-ventilated area.

Grinding equipment must be used only by trained personnel who understand the applicable work-
place regulations.

ENTANGLEMENT AND ROTATING PARTS HAZARD

Rotating parts can cut or amputate fingers and other body parts.

Keep clear of rotating parts.

Do not operate equipment with protective guards or covers removed.

Do not wear loose clothing, jewelry or long hair while operating equipment. 

Before checking, moving, or servicing equipment, disable power supply.

BURN HAZARD

Cutters and engine can become very hot during operation. To avoid severe burns, do not touch hot 
equipment. Wait until equipment has cooled completely.

EQUIPMENT MISUSE HAZARD 

Misuse can cause death or serious injury.

Do not operate the unit when fatigued or under the influence of drugs or alcohol.

Do not leave the work area while equipment is energized. Turn off all equipment when equipment 
is not in use.

Check equipment daily. Repair or replace worn or damaged parts immediately with genuine manu-
facturer’s replacement parts only.

Do not alter or modify equipment.

Use equipment only for its intended purpose. Call your distributor for information.

Keep children and animals away from work area.

Comply with all applicable safety regulations.

Maintain a safe operating distance from other people in the work area.

Avoid any pipes, columns, openings, or any other objects protruding from work surface.

PERSONAL PROTECTIVE EQUIPMENT

You must wear appropriate protective equipment when operating, servicing, or when in the operating 
area of the equipment to help protect you from serious injury, including eye injury, inhalation of dust or 
chemicals, burns, and hearing loss. This equipment includes but is not limited to:

Protective eye wear.

Protective shoes.

Gloves.

Hearing protection.

Properly fit-tested and government approved respirator suitable for the dust conditions.

Summary of Contents for GrindLazer 25M992

Page 1: ...se up cut Must be used with LineDriver GrindLazer HP DC1021 G 627 cc 21 hp Electric Start IMPORTANT SAFETY INSTRUCTIONS Read all warnings and instructions in this manual and in the Operation and Parts...

Page 2: ...ch Replacement 11 Pulley Replacement 12 Brush Replacement 13 Drive Bearing Assembly Replacement 14 Door Bearing Assembly Removal 14 Door Bearing Assembly Installation 14 Drive Bearing Assembly Removal...

Page 3: ...r long hair while operating equipment Before checking moving or servicing equipment disable power supply BURN HAZARD Cutters and engine can become very hot during operation To avoid severe burns do no...

Page 4: ...Do not operate in an enclosed area BATTERY HAZARD Lead acid batteries produce explosive gases and contain sulfuric acid that can cause severe burns To avoid sparks and injury when handling or working...

Page 5: ...zer can be moved around without drum touching surface F Front Wheel Lock Lever Front wheel is usually locked to guide GrindLazer in a straight line When lever is engaged front wheel becomes unlocked a...

Page 6: ...it travels DC1021 Model is designed for reverse up cut grinding the drum rotates in the opposite direction that it travels 1 Slide replacement drum onto hex shaft 2 Lower Drum Adjustment Dial D and pu...

Page 7: ...ide of drum Remove end plates 3 Push rod out and remove cutters Installation Carbide Flail Carbide Miller 1 Replace cutters and washers visit www graco com drumassembly for cutter stacking recommendat...

Page 8: ...1 Replace all spacers and diamond blades in the sequence and orientation shown below blades should be rotated in alternating segments when stacking NOTE Blades must be centered on drum for best perfor...

Page 9: ...wo sides of belt 3 Use two wrenches to loosen motor mount bolts on each side of scarifier base 4 Tighten bottom bolt to lower pulley plate 5 Remove used belt To avoid injury from unexpected start up d...

Page 10: ...cording to recommended tension below Belt Tension Recommendations 4 Tighten jam nut through two sides of belt 5 Replace belt shroud and tighten three nuts and four screws ti15061a ti15087a ti15083a 3V...

Page 11: ...move clutch bolt 3 Remove used clutch Installation 1 Install clutch 2 Use impact wrench to tighten clutch bolt 3 Install belt and belt guard see Belt Replacement page 9 To avoid injury from unexpected...

Page 12: ...val holes Evenly tighten screws and slowly remove pulley 5 Remove pulley Installation 6 Install pulley onto hex shaft 7 Insert three pulley screws and washers 8 Replace belt guard and belt see Belt Re...

Page 13: ...mounting bolts 2 Remove used brush Installation 1 Install new brush 2 Tighten two mounting bolts To avoid injury from unexpected start up disconnect spark plug wire and black battery cable DC1021 G on...

Page 14: ...ge 2 Install dust cover onto bearing Hand tighten nuts and lock washers to the door NOTE Do NOT fully tighten bolts at this time 3 Assemble door onto unit and slide door around until the bearing assem...

Page 15: ...bolts into adjacent holes and evenly tighten to remove sheave from bushing c Remove sheave d Remove set screw from bushing e Remove bushing from drive shaft If bushing is very tight tap a flat head s...

Page 16: ...elow Sheave Installation 1 Insert bushing onto drive shaft Make sure key is in place 2 Apply thread sealant to set screw and install set screw into bushing 3 Apply thread sealant to bolt and place loc...

Page 17: ...m 19 21 21 6 in 15 cm 23 24 15 7 in 17 5 cm 27 28 11 8 in 20 cm 31 32 7 9 in 23 cm 35 36 3 10 in 25 cm 38 39 2 For best performance use 1 4 in spacers on each end of shaft to center diamond blades on...

Page 18: ...raulic oil Parking brake is set Fill with Mobil 15W 050 synthetic oil Release parking brake Wheel release is open Close hand tighten Engine shuts off when operator exits LineDriver Safety switch Set p...

Page 19: ...P DC1013 G Model 25M993 Dimensions Unpackaged Packaged Height in cm 46 116 8 50 5 128 3 Width in cm 28 71 1 37 94 0 Length in cm 62 157 5 73 185 4 Weight lb kg 310 141 410 186 Noise dBa Sound Power pe...

Page 20: ...t disclose any defect in material or workmanship repairs will be made at a reasonable charge which charges may include the costs of parts labor and transportation THIS WARRANTY IS EXCLUSIVE AND IS IN...

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